Hello!
To solve this, find the cost of a single light bulb first, by dividing 9 / 5.
9 / 5 ==> 1.80
One light bulb is $1.80
Now, multiply 1.80 by 7.
1.80 * 7 = 12.6
7 light bulbs cost $12.6
Hope this helps! ☺♥
The number that is being multiplied by the variable ( the letter) so like if you have 2X the 2 is the coefficient
25 divided by 60 would be .416 repeating, rounded to .417
60 divided by 25 would be 2.4
